Massey-Harris 101 Junior

The Massey-Harris 101 Junior is a tractor produced by Massey Harris. It is equipped with a 162 ci 2.7 L engine. The rated power output is 30.56 hp 22.8 kW. Transmission: 4 forward and 1 reverse. Operating weight: 3400 lbs 1542 kg.

Overview

	1939 - 1946 Row-Crop tractor
1939 - 1946
Row-Crop tractor

Production
Manufacturer	Massey-Harris
Row-Crop tractor
Built in Racine, Wisconsin, USA
Massey Harris model 101 Junior gasoline tractors that were destined for the export market were marked as a "102G".

Variants
101 Junior	gasoline
102 Junior	distillate

Massey-Harris 101 Junior Transmission
4-speed gear
Transmission details ...

Massey-Harris 101 Junior Power
Drawbar (claimed)	20.5 hp 15.3 kW
PTO (claimed)	26.3 hp 19.6 kW
Plows	2
Drawbar (tested)	24.65 hp 18.4 kW
Belt (tested)	30.56 hp 22.8 kW
Performance test details ...

Mechanical
Two-wheel drive
Manual steering
Open operator station.

Power Take-off (PTO)
Rear PTO Type	540 (1.375)

Dimensions & Tires
Wheelbase	83.5 inches (row-crop) 212 cm
	78 inches (standard) 198 cm
Weight	3400 lbs 1542 kg
Front tire	5.00-15
Rear tire	10.00-36
Full dimensions and tires ...

Belt Pulley
Diameter	13 inches 33 cm
Width	6 inches 15 cm
RPM	837
Speed	2958 ft/min 901.60 meters/min

References
101-Jr Tractor published in 1941, by Massey-Harris

Engine

Engine options
Continental 2.0L 4-cyl gasoline
Continental 2.3L 4-cyl gasoline
Continental 2.7L 4-cyl gasoline

Engine Detail — 123.7 ci / 2.0 L Gasoline

Manufacturer	Continental
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled vertical L-head
Original engine, used until 1940.
Displacement	123.7 ci 2.0 L
Bore/Stroke	3.00x4.375 inches 76 x 111 mm
Air cleaner	oil bath
Compression	6.7:1
Rated RPM	1500
Starter volts	6
Coolant capacity	11 qts 10.4 L

Engine Detail — 139.6 ci / 2.3 L Gasoline

Manufacturer	Continental MFA
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled vertical L-head
Larger engine, used from 1940 to 1943.
Displacement	139.6 ci 2.3 L
Bore/Stroke	3.1875x4.375 inches 81 x 111 mm
Air cleaner	oil bath
Rated RPM	1800
Starter volts	6

Engine Detail — 162 ci / 2.7 L Gasoline

Manufacturer	Continental
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled vertical L-head
Final engine, used from 1943 to 1946.
Displacement	162 ci 2.7 L
Bore/Stroke	3.4375x4.375 inches 87 x 111 mm

Transmission

Transmission — 4 forward and 1 reverse gear

Type	gear
Gears	4 forward and 1 reverse

Dimensions

Massey-Harris 101 Junior Tires
Ag front	5.00-15
Ag rear	10.00-36
Ag front	4.75-15
Ag rear	10.00-36

Dimensions
Wheelbase	83.5 inches (row-crop) 212 cm
	78 inches (standard) 198 cm
Weight	3400 lbs 1542 kg
Rear tread	52 to 88 inches 132 to 223 cm (row-crop)
Rear tread	52 inches 132 cm (standard)

Tests

Nebraska Tractor Test 318
124 gasoline 4-speed 2WD May 22 - 26, 1939 Link: Nebraska Tractor Test 318 file
Belt power (max)	26.27 hp 19.6 kW
Belt fuel use (max)	2.4 gal/hour 9.1 l/hour
Drawbar performance
Max power	20.47 hp 15.3 kW
Gear 3 used for power test.
Max pull	3,079 lbs 1396 kg
Gear 1 used for pull test.

Nebraska Tractor Test
140 gasoline 4-speed 2WD October 7 - 12, 1940 Link: Nebraska Tractor Test file
Belt power (max)	30.56 hp 22.8 kW
Belt fuel use (max)	2.6 gal/hour 9.8 l/hour
Drawbar performance
Max power	24.65 hp 18.4 kW
Gear 3 used for power test.
Max pull	3,278 lbs 1486 kg
Gear 1 used for pull test.

Photos

Massey Harris 101 Junior with tricycle front end.

Massey Harris 101 Junior with tricycle front end.

Massey Harris 101 Junior with tricycle front end.

Massey Harris 101 Junior with tricycle front end.

Massey Harris 101 Junior with wide front end.